loss_diffraction

pycraf.pathprof.loss_diffraction(pathprop)

Calculate the Diffraction loss of a propagating radio wave according to ITU-R P.452-16 Eq (14-44).

Parameters:

pathpropPathProp instance

This helper class works as a container to hold various properties of the path (e.g., geometry).

Returns:

L_d_50Quantity

Median diffraction loss [dB]

L_dpQuantity

Diffraction loss not exceeded for p% time, [dB]

L_bd_50Quantity

Median basic transmission loss associated with diffraction [dB]:

L_bd_50 = L_bfsg + L_d50

L_bdQuantity

Basic transmission loss associated with diffraction not exceeded for p% time [dB]:

L_bd = L_b0p + L_dp

L_min_b0pQuantity

Notional minimum basic transmission loss associated with LoS propagation and over-sea sub-path diffraction

Notes

• L_d_50 and L_dp are just intermediary values; the complete diffraction loss is L_bd_50 or L_bd, respectively (taking into account a free-space loss component for the diffraction path)